diff --git a/osc/checker.py b/osc/checker.py
index 88eb7cc8..6ddf8d74 100644
--- a/osc/checker.py
+++ b/osc/checker.py
@@ -87,6 +87,8 @@ class Checker:
         self.imported[file] = 1
 
     def check(self, pkg):
+        # avoid errors on non rpm
+        if pkg[-4:] != '.rpm': return
         fd = os.open(pkg, os.O_RDONLY)
         hdr = self.ts.hdrFromFdno(fd)
         os.close(fd)